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Finding the Fourth Proportional to 123,264.97, 170,051.64 and 72,251.84

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Solution

The fourth proportional to 123,264.97, 170,051.64 and 72,251.84 is: 99,675.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,264.97 : 170,051.64 = 72,251.84 : x
  2. Step 2: Convert to fraction form
    123,264.97/170,051.64 = 72,251.84/x
  3. Step 3: Cross multiply
    123,264.97x = 170,051.64 × 72,251.84
  4. Step 4: Simplify right side
    123,264.97x = 12,286,544,039.20
  5. Step 5: Solve for x
    x = 12,286,544,039.20/123,264.97
  6. Step 6: Final answer
    x = 99,675.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.